[all-commits] [llvm/llvm-project] bf77b1: [AMDGPU] Introduce optimizeCompareInstr

[Stanislav Mekhanoshin via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bf77b11277411f6725cf09a66feb36d2c14bc8a7
      https://github.com/llvm/llvm-project/commit/bf77b11277411f6725cf09a66feb36d2c14bc8a7
  Author: Stanislav Mekhanoshin <Stanislav.Mekhanoshin at amd.com>
  Date:   2021-09-01 (Wed, 01 Sep 2021)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
    M llvm/lib/Target/AMDGPU/SIInstrInfo.h
    M llvm/test/CodeGen/AMDGPU/amdgpu-codegenprepare-fold-binop-select.ll
    M llvm/test/CodeGen/AMDGPU/cross-block-use-is-not-abi-copy.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.div.fmas.ll
    A llvm/test/CodeGen/AMDGPU/optimize-compare.mir
    M llvm/test/CodeGen/AMDGPU/select-i1.ll
    M llvm/test/CodeGen/AMDGPU/trunc.ll
    M llvm/test/CodeGen/AMDGPU/wave32.ll

  Log Message:
  -----------
  [AMDGPU] Introduce optimizeCompareInstr

The following patterns are currently handled:

s_cmp_eq_u32 (s_and_b32 $src, 1), 1 => s_and_b32 $src, 1
s_cmp_eq_i32 (s_and_b32 $src, 1), 1 => s_and_b32 $src, 1
s_cmp_eq_u64 (s_and_b64 $src, 1), 1 => s_and_b64 $src, 1
s_cmp_ge_u32 (s_and_b32 $src, 1), 1 => s_and_b32 $src, 1
s_cmp_ge_i32 (s_and_b32 $src, 1), 1 => s_and_b32 $src, 1
s_cmp_lg_u32 (s_and_b32 $src, 1), 0 => s_and_b32 $src, 1
s_cmp_lg_i32 (s_and_b32 $src, 1), 0 => s_and_b32 $src, 1
s_cmp_lg_u64 (s_and_b64 $src, 1), 0 => s_and_b64 $src, 1
s_cmp_gt_u32 (s_and_b32 $src, 1), 0 => s_and_b32 $src, 1
s_cmp_gt_i32 (s_and_b32 $src, 1), 0 => s_and_b32 $src, 1

Differential Revision: https://reviews.llvm.org/D109031